How do I create realistic lighting emiting from a bulb from a lamp
With a "point" light as lamp and a fabric texture with translucent shader for the lampshade.



The point light is just a light (as suggested by OldMan in the comments):



The lampshade is composed of a fabric texture and a translucent shader:



"No more"... if you try replacing the point lamp by a sphere, this is working too, but the render is slower and more noisy.